Reversing and speed-changing transmission-gear.



"No. 833.80g. PATENTED 001 23, 1906.

- J. BEDDING. I RBVERSING AND SPEEDUHANGING TRANSMISSION GEAR.

APPLICATIONTILED MAY ZO. 1905.

, ,2 sums-sum 1 INVENTOR W I TNESSlEQ :f% a. @v A,

aw; Rama-7 By NORRIS PETERS cm, WASHINGTON, n. c.

mission-Gear, of whic UNITED STATES PATENT oFFIGE;

JACOB BEDDING, OF ANDERSON, INDIANA, ASSIGNOR TO J. W. DAVIS, OF

ANDERSON, INDIANA.

FIEVERSI NG AND SPEED-CHANGING TRANSMISSION-GEAR.

zen of the United States, and a resident of Anderson, in the county ofMadison and State of Indiana, have invented a new and,

useful Reversing and S eed-Changing Transthe following is aspecification.

The subject of the present invention is'a gear through which motion maybe transmitted from a drivin member to a driven member to cause the l a.ber of speeds in the forward direction and tter to travel a numalso ina reverse direction without changing the direction of rotation of thedriving member.

In my Letters Patent No. 526, 199, granted September 18, 1894, Idisclose means for lockmg a driven member to a driving member directlyinsuch a manner as to transmit motion in a like direction and at thesame speed, this means being also constructed when released to throw ina planetary gear which would change the motion of the driven member to agreater speed than that of the driving member. A device'having similar"objects in view is disclosed in my Letters Patent No. Neither of theseconstructions, however, provides an additional set of pimons orgear-wheels by; which to secure a reverse motion, although a reversemotion can be obtained by removing and rearranging the inions shown, noris it possible to secure a orward movement at a reduced speed.

In the present invention I employ a construction by which may beobtalned in the driven member not only a speed the same as the drivingmember, but one or more forward s eeds slower than the driving memberand a so a reverse motion.

Other and further objects will appear in the following description andwill be more particularly pointed out in the claims.

In the drawings, Figure 1 is a perspective view of one embodiment of myinvention.

Fig. 2 is a section on the line 2 2, Fig. 3. Fig.

3 is a section on the line 3 3, Fig. 2; and Fig.

4 is a section similar to Fig. 2, showing another embodiment of myinvention.

Referring more particularly to the drawings, 1 indicates a drivingmember or shaft. A casing or mounting 3, having a radial web' and hub 4,is keyed at 5 to the shaft to turn Specification of Letters Patent.

Application filed May 20, 1905. Serial No. 261,372-

Patented Oct. 23, i90

rovided with heads 6, in es 7 of tubular convertingtherewith and is 'torevolve about and at the same speed as said shaft. Eachconverting-shaft" as rigidly keyed" u on it a plurality of pinions 9,10, and 11, w 'ch mesh with a like number of pinions 12, 15, and 16,loosely journaled about the driving-shaft 1, so that their axes are thesame and correspond with the axis of the driving-shaft. Thepinions oneach converting-shaft 8 are of different sizes, as are theloosely-journaled pinions on the drivingshaft 1. The smallest pinion 16on the driving-shaft meshes with thelargest pinions 11 on theconverting-shaft. The largest pinion 15 on the driving-shaft meshes withthe smallest pinions 9 on the converting-shaft, and theintermediately-sized pinion 12 on the driving-shaft meshes with the likepinions 10 on the converting-shaft, the pinion 10 being smaller than thepinion 12.

In the embodiment shown in Fig. 2 the pinion 12 has keyed to its sleeve13 at 14 the driven member 2 in the form of a sprocketwheel, while thepinion 15 surrounds and turns on the sleeve 13 and has keyed to it at I18 a brake-disk 17. The pinion 16 has a brake-disk 19 keyed to it, thekey 20 permitting the disk to move laterally into and out of engagementwith cooperating brakingsurfaces 25 on the casing 6 and the disk, the

disk being normally held away from the casing by a coiled spring 26 andforced against said casing by a rotatable cam 27, which co- 0 erateswith a cam 28, fixed to the shaft 1, t e disk having a ball-bearingconnection 29 with said clutch. For independently holding the pinions 16and '15 against rotation there is provided a pair of band-brakes 21 and22, respectively, cooperating with brake disks or members 19 and 17 andcontrolled through levers 23 and 24.

In the embodiment shown in Fig. 4 the parts are the same'as in Fig. 2,except that the driven member 2 is adapted to receive power from thepinion 12 or the pinion 15.

For this pur osethe sleeve 13, corresponding to the s eeve 13 in Fig. 2,is referably "extended and provided with an e argement 13, having abeveled clutch-face 13 while the sleeve of the pinion 15 is providedwith a beveled clutch-face 15 The driven memher 2 is mounted on thesleeve 13 and is adapted to be shifted, so that its beveled clutch-faces2 and 2 may engage at will the beveled clutch-faces 13 and 15, respec-'tively. The high speed of the driven member 2 in a forward direction isproduced by forcing the band and clutch-disk 19 into engagement with thecasing, thereby causing.

all the parts to turn as one mass. Assume that pinions 16 and 10 havetwenty-eight teeth each, pinions 11 and 12 thirty-two teeth each, andpinion 15 thirty-six teeth. Now, owing to the fact that pinions 9, 10,and 11 are journaled in the mounting or casing, if one of them mustrevolve around a stationary pinion 15 or 16 and in the same direction inwhich the casing travels it follows that the pinions 9, 10, and 11 willrevolve on their own axes in the same direction as that of the casingand at the same relative rate of speed proportionate to the actualnumber of teeth engagements necessary to enable the associate pinion topass one around the stationary pinion on each complete revolution of thecasing. Now if pinion 16 is held stationary by means of band-brake 21there must of necessity be twenty-eight teeth engagements between it andpinion 11 in each complete revolution of the casing 6, and since pinion11 has thirty-two teeth it will revolve throug or seven eighths of acomplete revolution in passing once around stationary pinion 16. Pinions9 and 10 will, therefore, likewise make seven-eighths of a completerevolution on their own axes during one complete revolution of thecasing. Pinion 10having twenty-eight teeth will travel throughtwenty-four and onehalf teeth of its circumference around pinion 12during one revolution of the casing, therebymaking no provision forseven and one-half of the teeth in pinion 12. There is, therefore, butone possible way for pinion 12 to move completely around pinion 12 andthat is to push, pull, shove, or carry pinion 12 in a forward directionthrough seven and one-half teeth of its circumference or through of acomplete revolution during one revolution of the gear-case. If thedriven member 2 is coupled directly to the sleeve 13, as shown in Fig.2, or through the medium of clutch-faces 2 and 13 to sleeve 13, therewill be produced in the driven member a slower speed in the forwarddirection than the driving-shaft. Pinion 9 when the pinion 16 is heldstationary will permit of twenty-one teeth escapements in engagementwith pinion 15, leaving fifteen of the thirty-six teeth not functionallyengaged. Hence pinion 15 will be moved forward through of a revolutionduring one complete revolution of the gear-case. In Fig. 2, 9 and 15 areidlers when 16 is stationary; but in Fig. 4 if the driven member 2 isshifted so that clutch-faces 2 and 15 engage one another there will beproduced in the driven member a speed. slower than the driving memberand greater than that obtained from pinion 12, and the pinions 10 and 12will run as idlers. When 15 is held stationary by the band-brake 22 andthe band-brake 21 is released from disk 19, pinion 9 is compelled toexecute thirty-six teeth. engagements during one complete revolution ofthe casing, and consequently it travels through or one and one halfrevolutions on its own axis while passing once around pinion 15. Pinion10 must travel at the same rate of speed, andv hence it e'l'l'ectsforty-two teeth engagements in one complete revolution of the casing.Since there are only thirty-two teeth on pinion 12 said pinion mustnecessarily travel in a reverse direction proportionate to thedifference in the number of its own teeth and that of the teethengagements, which is or .fivesixteenths of a complete revolutionbackward. In Fig. 2 the driven member being permanently connected to thepinion 12 par takes of the reverse or backward motion but in Fig. 4 itis necessary to shift driven member 2 so that faces 2 and 13 are inengagement.

The embodiments herein shown within the scope of the appended claimsmaybe changed in various ways without departing from the spirit orsacrificing any of the advantages of my invention.

Having thus described my invention, what I claim is- 1. The combinationwith a driving-shaft, of a converting-shaft revoluble about thedriving-shaft at the same speed therewith and rotatable about its ownaxis, a plurality of pinions carried by the converting-snaft androtating with said shaft, a plurality of pinions loosely journaledaround the drivingshaft and each meshing with one of the pinions on theconverting-shaft, a pinion held against rotation and meshing with. oneof the pinions on the converting-shaft, and a driven member adapted tobe connected with any one of the above-mentioned loosely-journaledpinions.

2. The combination with a driving-shaft, of a converting-shaft revolubleabout the driving-shaft at the same speed therewith and rotatable aboutits own axis, a plurality of pinions carried by the converting-shaft androtating with the same, a plurality of pinions loosely journaled aroundthe drivingshaft and. each meshing with one of the pinions on theconverting-shaft, means for independently holding a plurality of saidlooselyjournaled pinions against rotation, and a driven member adaptedto be connected to a plurality of the latter pinions to receive rotationtherefrom.

3. The combination with the driving-shaft,

of a casing surrounding the driving-shaft, a converting-shaft journaledin the casing and revolving about the driving-shaft, a plurality ofpinions carried by and turning with the converting r shaft, a pluralityof pinions loosely j ournaled about the drive-shaft and meshing with theconverting-shaft pinions, a brake-disk carried by one of theloosely-journaled pinions, and movable into engagement with the casingto cause the casing and the brake-disk to turn together, and a bandbrakeadapted to contact with the said disk to hold it against rotation.

4. The combination with the driving-shaft,

of a casing surrounding the driving-shaft, a converting-shaft j ournaledin the casing and revolving about the driving-shaft, a plurality ofpinions carried by and turning with the converting-shaft, a plurality ofpinions loosely journaled about the drive-shaft and meshing-EwiththeLconverting-shaft pinions,

engagement with the casing to cause the casmg to turn therewith, andband-brakes adapted to. engage said disks.

5. In a transmission-gear, the combination of the driving-shaft, thedrum mounted thereon, the loose pinions and the driven member alsomounted on said shaft, the latter receiving motion from one of thepinions, independent brake-disks for some of the loose pinions, and aconverting-shaft mounted in the drum and geared to the loose pinions,one of said brake-disks being constructed to move axially and engage thedrum.

The foregoing spem'fication signed at Anderson, Indiana, this 29th dayof April, 1905.

JACOB BEDDING.

In presence of J. W. DAVIS, JOHN R. SHoMLEY, Jr.

